fix: add actions permission for updater workflow tests

The cancel-workflow-action needs actions: write permission to cancel
previous workflow runs.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: vaind

.github/workflows/workflow-tests.yml

@@ -7,6 +7,7 @@ on:
 permissions:
   contents: write
   pull-requests: write
+  actions: write
 
 jobs:
   # Test PR creation scenario - should create a PR with specific version pattern